123503310421 has 8 divisors (see below), whose sum is σ = 130817661120. Its totient is φ = 116194454208.

The previous prime is 123503310419. The next prime is 123503310443. The reversal of 123503310421 is 124013305321.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123503310421 - 2¹ = 123503310419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123503310451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1327291 + ... + 1417288.

It is an arithmetic number, because the mean of its divisors is an integer number (16352207640).

Almost surely, 2^123503310421 is an apocalyptic number.

It is an amenable number.

123503310421 is a deficient number, since it is larger than the sum of its proper divisors (7314350699).

123503310421 is a wasteful number, since it uses less digits than its factorization.

123503310421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2747243.

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 123503310421 its reverse (124013305321), we get a palindrome (247516615742).

The spelling of 123503310421 in words is "one hundred twenty-three billion, five hundred three million, three hundred ten thousand, four hundred twenty-one".